Effect of Modified Phosphogypsum on the Mechanical Properties of Super Sulphate Cement

Abstract:

The effect of phosphogypsum (PG) modified on mechanical properties of super sulphate cement (SSC) was systematically studied in this paper. Then attentions and researches were focused on the relationship between specific surface (SSA) and the mechanical properties of SSC containing PG modified by calcining, floating, neutralizing with alkali. Strengthening mechanisms of SSC were further investigated and analyzed by laser particle size analyzer and chemical composition analyzer at last. Results showed that the high strength SSC with the compressive strength 35MPa at 7 days, over 60MPa at 28 days, and some even more than 70MPa at 56 days, could be successfully developed. This research can provide a key reference for the utilization of PG and development of high performance eco-SSC.

• Periodical: Applied Mechanics and Materials (Volume 161)
• Pages: 264-268
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.161.264
• Online since: March 2012
• Authors: Yu Xin Gao, Bao Ying Yu, Fen Lian Xu
• Keywords: Mechanical Property, Phosphogypsum (PG), Specific Surface Area (SSA), Super Sulphate Cement (SSC)

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